John wiard



JOHN WIARD, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO HIMSELF AND THOMASA CONKLIN, OF SAME PLACE.

Letters Patent No. 71,350, dated November 26, 1867. l

IMPROVEMENT IN KEY-GUARD ron noon-Locus.

digs some numb in in tljttt items not ant lllil'lililg iiltlfl at 1am.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, JOHN WIARD, of New Brituin, county of Hartford, and,State of Gonnecticu tjhave invented certain new and useful Improvementsin the Manufacture of Locks; and to enable others skilled 'in the art tomake and use the same, I will proceed to describe by referring to thedrawings,'in which the same letters indicate like parts in each of thefigures; i

The nature of this invention will be understood from the specificationand drawings. r The object desired to be attained thereby is to securethe key of a lock in a fixed position when the bolt thereof is turnedforward, so as to prevent it (the key) from being turned or pushed'outof the look by burg- 1m implements inserted through the key-hole.

-It consists of a spring secured to the case, so that when the key isturned, with the bolt,toa given point,

it (the spring) will press the key into a depression formed in theopposite side of the lock-case, so that a person inside of a room mayturn the belt of the lock in the usual way, unconscious of this featureof the lock which fastens the key, when the key will become fixed insaid depression by the pressure of said spring, as a hindrance toburglars enterprise. In the accompanying drawingsi Figure 1 is aninterior view of a portion of a lock, showing its mechanism partly indotted lines.

Figure 2 is a cap or side of the lock-case removed, so as to show theinterior thereof, A

a is the lock-case; b isthe face-plate; c is the look-bolt; d is thetumbler, whichundcrlies the bolt; 0 is a spring, secured to the case bymeans of a screw or pin, 2'; la is a depression (see fig. 2) in the capor opposite side of the case, formed nearly opposite of the swellportion of the spring e, so that as the hit of the key 1: turns thebolts into the position as shown in fig- 1, the bit of the key will be,in position upon the swell of the'spring e, and be pressed thereby intothe depression k formed in the opposite sidcor cap of the case. (Seefig. 2.) i r i Now, should a person enter a room and look the door, uponwhich is arranged one of these, locks, and afterwards desire to openor-unlock the door, and the key should not readily act by the pressureof the fingers in the usual way, instinct, it is believed, would readiiysuggest the inward pressureof the key, which, with the turning pressureby the action of the hand, would at once cause the bolt to move back inthe usual way. Thus a person may look the door upon the inside of aroom, without fear of the lock being disturbed from the outside throughthe key-hole.

I believeIhav'e thus shown the nature, construction, and advantage ofthis invention in locks so as to enable others skilled to make and usethe same therefrom. What I claim, therefore, and desire to secure byLetters Patent, is

- In the manufacture of locks, the employment of the spring a,depression k, in combination with the bolt 0,

tumbler d s bstantiall as and for the ur ose described. w r I u y p pJOHN WIARED. [1,. s.]

Witnesses:

N. 0. WILDER, JEREMY W. Buss.

